We have some worrying news to inform you about for those of you who are planning to pick up the Samsung Nexus S handset on T-Mobile, as it has been revealed that T-Mobile are apparently blocking users from accessing video chat whilst on a 3G connection.

As we told you recently, the Nexus S recently received an update to Android Gingerbread version 2.3.4 and the biggest improvements were the addition of Google Video and Voice via Google Talk. This feature has been working fine on the Sprint Nexus S, but this is contrast to the experience that T-Mobile Nexus S users are facing.

According to a report over at Phandroid, T-Mobile has only enabled video chat on the Nexus S through G Talk on a WiFi connection only, meaning that you can’t access it on the go using 3G. This is not the end of the world for some users, but it’s still a strange choice by T-Mobile to block it off completely, especially when the likes of Sprint are doing no such thing.

If you have installed 2.3.4 on your Nexus S and you have experienced this problem at first hand, get in touch with us. Are you mad at T-Mobile for doing this, or do you only use video chat on WiFi anyway? We’ll let you know if we receive word from T-Mobile regarding this.